http://www.tf2outpost.com/trade/22876022 This guy tries to sell for 12 best offer he got was the 11 pure of Gp master.

Gp Master bought another hustler scorching for 11 buds like he said in the trade.(Bought the other Hallmark, sorry. But you can keep my offer as the highest one if you want. (To kill all those lowballers)

http://www.tf2outpost.com/trade/21980077 trying to sell for 12 buds no offers in 2 month in that price range.

http://www.tf2outpost.com/trade/21662909 trying to sell for 14 buds no offers in that price range ofc.

So guess the 11 buds is good price atm for the hat.